package com.qianxx.viewlibrary.text.gridpasswordview;

import android.text.method.PasswordTransformationMethod;
import android.view.View;

public class CustomPasswordTransformationMethod extends
		PasswordTransformationMethod {
	String transformation;

	public CustomPasswordTransformationMethod(String transformation) {
		this.transformation = transformation;
	}

	@Override
	public CharSequence getTransformation(CharSequence source, View view) {
		return new PasswordCharSequence(source);
	}

	private class PasswordCharSequence implements CharSequence {
		private CharSequence mSource;

		public PasswordCharSequence(CharSequence source) {
			mSource = source;
		}

		@Override
		public int length() {
			return mSource.length();
		}

		@Override
		public char charAt(int index) {
			return transformation.charAt(0);
		}

		@Override
		public CharSequence subSequence(int start, int end) {
			return mSource.subSequence(start, end);
		}
	}

}